Question

can anyone help me
please

Answer 1

Step-by-step explanation:

total length of the steel =5r+2pier

=5×45+2×22/7×45

now do the calculation on your own.

Answer 2

$Length \: of \: each \: stem (r) = 45\:cm$

$Total \: length \: of \: steel \: frame \\= 6r + circumference \: of \: the \:circle \\= 6r + 2\pi r \\= 2r( 3 + \pi ) \\= 2rbig( 3 + \frac{22}{7} \big)\\= 2\times 45 \big( \frac{21+22}{7}\big)\\= 90 \times \frac{43}{7} \\= \frac{3870}{7}\\= 552.86 \:cm$

Therefore.,

$\red {Total \: length \: of \: steel \: frame}$

$\green {= 552.86 \:cm }$

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